High-rise curtain wall buildings have become architectural statements across the globe, their façades projecting image and a creative intent which sets them apart from other buildings across city skylines. While curtain walls offer formability, durability and weather resistance, it’s vitally important that passive fire protection and compartmentation measures are installed to limit the spread of fire, saving lives and property. Chris Hall, Commercial Development Officer at SIDERISE, feels that passive fire protection solutions such as firestops are crucial to prevent the passage of flames and noxious gases travelling from one compartment floor or room to the next. Fires in high-rise buildings can generate large quantities of smoke that tend to spread vertically throughout the building, even if the fire is contained to one room. When the gap/cavity at the perimeter edge between the floor and curtain wall is not properly sealed, flames and smoke can spread vertically to higher floors, and horizontally from one room to the next. Addressing these gaps/cavities by properly installing firestops maintains the floors’ fire compartmentation of the building. This delays vertical smoke-spread and reduces the risk of smoke-related injury in the upper floors of the building, and adjacent rooms. Closing the gap The perimeter barrier firestops seal the gap between the edge of the compartmentfloor slab and external curtain wall. Due to project designs and site tolerances, this linear gap can be variable, so the firestop system used needs to have a degree of ‘dynamic’ movement capability – compression and recovery – in order to accommodate serviceability movement, and more significant movement under fire load. It’s critical the firestop system does this in combination with the primary functional requirement, which is to maintain continuity of fire resistance between the compartmentfloor and the external wall. The installed firestop system needs to match the same period of fire resistance as the compartment floor. All firestop systems need to be tested to two criteria – Integrity and Insulation (EI). Integrity (E) refers to the ability of the system to prevent the passage of flame, smoke and combustible gases either through, and around the material or through joints in an assembly; while Insulation (I) refers to a measure of the increase in conducted heat transferred from the exposed to unexposed surfaces of 180°C rises above ambient. These two criteria are critical in the development of curtain wall perimeter firestop products. The most effective products combine a number of material features – density, thickness, resin content, fibre structure and controlled compression – which together determine the resistance properties. When looking at the Integrity (E) criteria, the material chosen must be impervious to the transfer of flame and gases, easy to install with minimal site management and accommodate all real-world requirements at interfaces, joints and details. In order to meet the fire and smoke stop requirements in all external façade applications, Certifire Approved perimeter barrier and firestop systems offer an unrivalled combination of fully-qualified performance, practical installation and service benefits. The principal function of these systems is to maintain continuity of fire resistance by sealing the gap between the compartment floors or walls and external curtain walls horizontally and vertically. These systems can offer tested fire rating options ranging from 30 minutes to five hours and accommodate void widths up to 1200mm. In addition to providing an effective seal against the passage of smoke and fire, the products will also function as an effective acoustic barrier and plenum lining. Key design considerations The firestop should be installed under compression and must have test evidence to show that it is capable of accommodating movement of a façade. It is imperative that the installed seal is able to function effectively with due regard to all designed movement serviceability limits.  Curtain walling and cladding façade systems will deflect due to positive and negative windloads as well as occupational live loads.  These criteria are covered by EN 13116:2001.  Typically, a project may stipulate that the curtain walling system may have the following allowable deflection limits: Under the declared wind loads the maximum frontal deflection of the curtain walling’s framing members shall not exceed L/200 or 15mm, whichever is less, when measured between the points of support or anchorage to the building’s structure in compliance with EN 13116. (Extract from EN 138300) These factors may inevitably combine to preclude the suitability and therefore, use of certain systems e.g. high density material slab products. Perimeter barriers must be installed to provide horizontal compartmentation at every floor level.  Vertical cavity barriers should be provided as a minimum to fall in line with any compartment wall and more frequently if dictated by the fire strategy of the building. Products should be fitted tightly around all bracketry to restrict the passage of smoke.  Where there is potential for gaps, the product must be sealed with a sealant that carries the same fire insulation and integrity rating as the perimeter barrier. All installations should be in accordance with manufacturers’ instructions and where fixing brackets are required these should be fitted and spaced in accordance with a certified fire test report. Products used for fire safety installation should carry an independent third party certification in order to ensure that the product supplied is the same as that tested. The gap between the slab edge and the façade is often a weak point acoustically.  Any products used to improve the acoustic performance must not contribute to the fire load or inhibit the performance of the perimeter barrier. Seal the voids At the $135 million Al Fattan Crystal Towers in the Dubai Marina, UAE, fire safety was paramount in a development which houses hotel rooms, suites and residential apartments. With both vertical and horizontal fire compartmentation requirements, the specification of SIDERISE CW-FS 120 firestops provided the contractor Cladtech with a one-stop-shop solution that could maintain a fire and smoke seal in one product and could successfully fill lineargaps at the podium levels in excess of 300mm. For the two towers, Cladtech installed 12,000 LM of SIDERISE CW-FS 120 firestops including horizontal (floor slab) and vertical compartmentation. With the timeline on the project critical, the use of this dry fix system enabled the work to be completed quickly and efficiently, ready for handover to subcontractors.   Throughout the application, SIDERISE provided comprehensive support including drawing assistance, liaison with the authorities for approval, installation training and periodic site inspection and assistance. Whilst specifying the correct product is vital, the quality of installation is equally as important.  Contractors installing life saving measures such as perimeter barriers and firestops must have adequate training on the particular manufacturer’s products and be qualified to install it in the first place.  When it comes to saving lives and protecting businesses and property, a well designed and installed system can make the difference.  Visit: www.siderise.com

London Mayor Sadiq Khan has already gone on record to state that he wants to make the Capital a zero-carbon city by 2050 writes Kevin Knapp, CEO, Ecolution Renewables. It will be a major challenge and one that will only be achieved if Londoners are willing to embrace green technology. The Mayor has already put his considerable political weight behind a Solar Action Plan to persuade homeowners and businesses across the Capital to install photovoltaic panels to generate green electricity – and thousands are taking advantage of this initiative, benefitting from reduced installation costs and long term energy savings. It’s a welcome step forward but more could be done if householders and businesses would be willing to accept the Mayor’s challenge and even better – be prepared to go that extra mile, to help reduce air pollution across the Capital while significantly reducing reliance on fossil fuels. We call that extra mile #JointheEcolution which combines photovoltaic panels with advanced HyCube battery storage units further linked to electric charging points (EV) turning every household and business into its own virtual power station. With more electric cars on the road it means less pollution. Photovoltaics linked to storage units would also help to make buildings energy self-sufficient, with the ability to save and share that energy with others. It’s joined up green energy which could totally transform the way we power our homes and businesses in the future. The advantages are there for all to see. In the first month alone of 2018, London’s air pollution reached the legal limit for the entire year so anything that encourages the use of electric cars has to be welcome. Air toxicity has been at illegal levels in urban areas in the UK, including London, since 2010, resulting in around 40,000 early deaths a year. Add on our reliance on fossil fuels and nuclear and the word green seems a long way off. Now is the time to change all that and invest in renewables otherwise what will we leave for the next generation – London smog. As I recall - we have been there before and we did not like it. Visit: www.ecolutiongroup.com

If you think that some of the tallest towers in the world are impressive now, then you’ve seen nothing yet. Not only will the next generation of skyscrapers be in amongst the tallest in the world, with one becoming THE tallest and by a long way, they are also far greener too. Below is a graphic that highlights these new cloud puncturing structures, what they’ll have inside them and the green features that have been incorporated as well. Visit: http://rubberbond.co.uk

We’re in the middle of a shift in the world of architecture, construction, engineering and design writes Damian O'Neill, Director at Lyons O'Neill. We’ve just had London Design Festival, a week celebrating creativity and innovation in British design and inspiring the public and those in the industry to think about its future. This year’s festival had several arresting public installations: from Es Devlin’s roaring red poetry lion in Trafalgar Square and Kellenberger’s alphabet chairs to the Cross-Laminated Timber maze-pavillion in the V&A courtyard by Waugh Thistleton Architects. Architecture and design hit mainstream national headlines, reminding us of the great impact structures have. However, although each of these examples were uniquely thought-provoking, they all had something in common, reflecting a shift in thinking seen in the rest of the Festival as well as the architecture and design space as a whole. What linked these innovative projects was their exploration of the active relationship between a man-made structure and the environment, urban and natural. Both in terms of materials used, responding to the pressing need for environmental sustainability, and incorporation of their site-specific context, these projects demonstrate that in architecture we can no longer think of structures as static, monolithic objects, but as needing to adapt and relate to their surroundings and users. In addition to envisioning structures as relationships rather than objects, in conversation with the world, we’re also beginning to explore the impact buildings have on our natures. Research has shown that in the hippocampal part of our brain we have special cells which respond to the geometry and arrangement of the spaces we are in. And there are increasing studies being published which document the mental and emotional impact design has on the people who use a space. When designing, we therefore not only need to understand how a structure will affect and be affected by its natural environment, but the social role it plays. Alarge part of rethinking the built environment’s relationship with nature is by paying greater attention and respect to nature. In many ways, nature is the ultimate architect, displaying a breath-taking complexity and variety of design in its vast web of connections. Pioneering architecture and engineering is now about learning from this interconnection and seeking to work with, not against nature, designing structures to visually and physically integrate with their surroundings. And this new way of thinking isn’t just for design festivals and one-off flagship projects. A project of any scale should seek to marry nature with design and this begins right from the planning and drawings stage. Thoroughly researching the environmental conditions of an area will highlight which design elements and materials are most suited to the project and will minimise lasting disruption. For example, our award-winning Resedale House project came with a number of design considerations due to its sloping rural site and sustainability goals, but our close collaboration with Khoury Architects meant these were incorporated into the stunning and lightweight structure that was created. Using split levels to maximise space whilst minimising building height, as well as adding a lake area, meant the project was visually in tune with its surroundings. And strategically placed glazed facades meant the house’s inhabitants could enjoy the full benefit of the rural location and natural light. Architecture and design have many challenges ahead, both in the planning and construction stages. But this shouldn’t stifle creativity and inspiration but rather multiply it, as we understand that our structures, as well as ourselves, are in conversation with nature and all its beauty. Visit: http://www.lyonsoneill.co.uk    

Bridges carry you across the water, or across a busy road, but you might not have bothered to pay much attention to what is under your feet. Then again, not all bridges are built equal. Some are built from sketches that were lost for 400 years. Some are said to be built by the Devil himself! Here, Oasys, structure analysis software providers, take a look at these fascinating structures…  1.      The Rolling Bridge – UK Photograph by Loz Pycock This amazing steel bridge was created by Heatherwick studios to cross an inlet in London. What makes this bridge so unique is that it can tidy itself away! When needed, this bridge curls up into an octogen shape to stand on one side of the canal until a boat passes. The bridge also curls up every day at noon, if you want to see it in action!  Da Vinci Bridge – Norway Photograph by Egil Kvaleberg This next bridge, in Norway, was built from designs intended to be used in Istanbul that were drawn up by Leonardo da Vinci. The original drawing had a single span of 240 metres, but the project did not go ahead as it was believed that such a design was not feasible. As the first major engineering feat from a da Vinci drawing, the bridge finally came into the world in Norway. The bridge has just three arches to support the structure. Though the Norwegian bridge is a smaller version of the original plans, it shows that the design works — one arch under the bridge, and two arches either side leaning inwards to spread the weight.  The Devil’s Bridge – Germany Photograph by A. Landgraf Known as Rakotzbrücke, the bridge’s appearance looks like a perfect circle. The bridge is said to have been commissioned by a knight in 1860. But the rocks and stones used for its creation are jagged and spikey, so it was dangerous to cross. The bridge’s design was deemed a masonry challenge, according to Earth Trekkers. The idea was that only Satan himself could help with a difficult build such as these bridges, and the first human who crossed the completed bridge would pay for the Devil’s helping hand by giving up his soul. The bridge is no longer open to be crossed, due to preservation measures. But it is still an oddly beautiful sight to behold!  Fire-breathing dragon Bridge — Vietnam Photograph by Ehrin Macksey / Noi Pictures This next bridge might be the most flamboyant build on our list. Located in Da Nang in Vietnam, the Dragon Bridge is certainly a spectacular sight! The bridge is the result of an international competition by the Da Nang People’s Committee in order to improve travel in the city. The bridge has six lanes for vehicles, two lanes for pedestrians, and 2,500 LED lights. Of course, as a dragon, the bridge can breathe fire! In fact, the bridge can spout water or fire, and this display is often used for special occasions in the city.  Living Roots Bridges – India Photograph by Arshiya Urveeja Bose If ever there were living examples of the payoff of patience, these bridges are just that. These beautifully natural bridges were formed by guiding rubber tree roots with hollow canes so that they would grow outwards and meet from either side of a stream. It would take years to reach the opposite bank, but the hard work paid off as these Living Roots bridges can support the weight of a human. They were originally made by the Khasi tribe, who realised the bamboo bridges they were building would collapse or rot after a monsoon or heavy storm. Sources: https://bocadolobo.com/blog/architecture/10-of-the-worlds-most-beautiful-and-unique-bridges/ https://www.popularmechanics.com/technology/design/g248/4335705/ http://boredomtherapy.com/unique-bridges-around-the-world/ https://en.wikipedia.org/wiki/Azalea_and_Rhododendron_Park_Kromlau https://en.wikipedia.org/wiki/Living_root_bridges https://www.bemytravelmuse.com/rakotzbrucke-devils-bridge/ https://www.earthtrekkers.com/rakotzbrucke-fairytale-bridge-saxony-germany/ https://www.flickr.com/people/45649858@N08 http://www.bbc.com/travel/story/20150218-indias-amazing-living-root-bridges https://www.flickr.com/photos/blahflowers/ https://www.visitbritain.com/gb/en/rolling-bridge-london

The ever-widening skills shortage faced by the construction sector is driving up wages and having a significant impact on the government’s ambitious plan to build 300,000 homes every year in England alone.   But it is not just building targets that need to be met, there are also the hugely important carbon reduction targets and the need to ensure buildings are properly insulated with high quality products and installed correctly to allow them to perform. With the demand for tradespeople across all sectors of the construction industry outstripping supply, the skills’ shortage is a key constraint to the housebuilding industry severely impacting the quality of new buildings, the ability to build to budget and ensuring that all performance characteristics meet both design and regulatory requirements. How can the construction industry put in place measures that might put an end to the skills’ crisis? The contributing factors of the construction skills’ shortage are well documented; from an ageing workforce not being replaced, to a younger generation not seeing the industry as an attractive and viable option. Britain’s decision to leave the EU has only added to the industry-wide fear over the building skills’ shortage. Of the UK’s 270,653 migrant construction force, about 45% are workers from EU countries. When or if the UK’s divorce from the continent is finalised, there is a real fear that many employees who have arrived from overseas will leave, taking their building skills and experience with them.  Reaching out to students Inspiring the next generation to take-up a career in construction is fundamental to filling the current skills’ gap over the long-term. Changing the outdated and negative perceptions of the industry is part of this. The Construction Industry Training Board (CITB) recently asked a group of 14 to 19-year-olds which careers interested them - construction only scored 4.2 out of 10. According to the survey, young people claimed that construction means ‘being outdoors and getting dirty’. Young people overlook the fact a career in construction is incredibly diverse and is an industry with cutting-edge technologies, such as robotics, digitisation and modular building techniques – key to attracting a tech savvy younger generation. Companies in the industry need to reach out and engage with students, parents and teachers to create a better image of construction, right through from manufacturing, engineered solutions to site management. The industry needs to expand its recruitment and attract more women and people from ethnic diversities, which are currently under-represented. Women represent just 13% of the workforce, a shocking statistic considering the skills shortage. A fundamental shift towards inclusiveness is necessary while a joined-up approach between industry, the government and education sector – beginning with young people at primary school and then throughout education – will pave the way towards a more inclusive and accessible industry. The government has launched a number of initiatives to help plug the skills gap and has set a new target of three million new apprentices by 2020 across all sectors.  A £34 million investment in construction training and an apprenticeship levy – estimated to raise £3 billion a year - might go some way to securing a skilled and stable workforce. Alternative educational models such as part-time degree apprenticeships will also widen the route into the industry. An off-site approach Modern methods of construction can also play a part in plugging the gap by reducing on-site labour whilst at the same time addressing the high demand for new buildings. The increased use of off-site fabrication and systems such as structural insulated panels (SIPS), modular buildings and pre-engineered insulated roof systems for example can encourage greater efficiency and higher productivity within the sector, give a much needed boost to the UK housing supply capacity and ensure that the regulatory targets for energy efficiency are met or even exceeded.  Rethinking the way we design, engineer and construct buildings will help deliver projects quicker, better and with a greater degree of precision. Schemes such as the Each Home Counts Quality Mark will go a long way to ensuring that insulation measures are properly installed by skilled tradespeople and link this in with the Energy Company Obligation, this will ensure that consumers get the standards they expect and deserve. When it comes to addressing the chronic skills’ shortage, there is no easy solution, but rather a broad range of measures which can relieve the pressure on construction companies trying to compete within their sectors. The built environment is evolving all the time and the demand for construction has never been greater which means addressing the skills’ gap is now more critical than ever.  It is down to construction companies, the government and our educational system to play their part in closing the skills’ shortage gap. Visit: www.insulationmanufacturers.org.uk

The construction industry faces many challenges. One of these is around delivering projects on time and on budget writes Fiona Irvine LIoR, Technical Services Advisor, Sika UK. Refurbishment projects is one area where accurately predicting cost and time is notoriously difficult as all too often unforeseen factors come into play when a project starts, typically as a result of stripping away part of the building and finding something unexpected. Thermal imaging is one area where technology is helping to overcome this and is now a key part of Sika roof refurbishment offering. Infrared thermography (IRT) and thermal imaging technology detect radiation in the long-infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 µm). This produces an image called a thermogram. Since infrared radiation is emitted by all objects with a temperature above absolute zero, thermography makes it possible to see an environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature. Therefore, thermography allows you to see variations in temperature. When viewed through a thermal imaging camera, warm objects stand out well against cooler backgrounds. Thermography has a long history, but its use has increased dramatically with the commercial and industrial applications of the past fifty years. Typical uses include firefighters who use thermography to see through smoke, to find people and to localise the base of a fire. Maintenance technicians use thermography to locate overheating joints and sections of power lines, which are a sign of impending failure. In the construction industry it has been traditionally used to identify heat leaks in faulty thermal insulation and to improve the efficiency of heating and air-conditioning units. Sika has been using thermal imaging technology since 2014. Investment in the technology was driven by the Sales Management Team as a way of adding value to clients. Sika has also invested in me as an individual to become a certified Level 1 thermographer, with training conducted by the world renowned Infrared Training Centre (ITC). As a global leader, working across a variety of market sectors from construction to automotive (see http://bit.ly/2o8Ca6Z) investing in technology and adding value across our supply chain is an essential part of what we do - everyday. We have predominantly used thermal imaging on refurbishment projects to track the extent of damage to the existing roof build up. It provides a much more comprehensive survey report and enables the creation of a more appropriate and suitable specification. It also helps to highlight, in advance, any issues that would have otherwise been unforeseen, helping to reduce risk and avoid any delays or additional costs. For example, we can locate saturated insulation within a roof build up. This can then be backed up with core samples to determine if a roof can be locally stripped to remove damaged insulation or whether a full strip is required. This means we can be more accurate when working with contractors, helping them to accurately price work and identify the most suitable approach, such as removal and replacement of localised roof areas. Thermal imaging provides a wealth of information the naked eye cannot see. It allows us to narrow down the locations where destructive core samples are required. It also provides a visual representation of how the roof is performing thermally. Sika is always striving to be ahead of the competition and utilsiing thermal image is one element of this. However we don’t intend to sit on our laurels. There are several ways to survey a roof and we will continue to look at how technology can aid this. However it shouldn’t stop there. Sika has successfully proven that thermal imaging can add value to roof refurbishment projects and we must now consider what other construction applications it has beyond a roof. For example, how can it be used on flooring, or structural strengthening or concrete repair applications? We will continue to invest in technology that helps us reduce clients risk and deliver projects more effectively. It’s what’s makes Sika that little bit different – it’s what we do every day. Visit:  http://gbr.sika.com/en/group/about-us/sika-everyday.html    

Summer has ended and September has begun, meaning it is back-to-school week for all children across the UK. Sadly, this won’t be the case for pupils at Roding Primary School, Dagenham, as a huge fire tore through half the school’s premises, reducing classrooms, break-out-areas and equipment to ruins and preventing the school from opening. This disaster brings into sharp focus the destructive impact of fire in a school, but what are the wider effects of fire on education and how can its impact be averted? Taking place a day before the start of term, the fire at the school’s campus on Hewett Road has caused significant disruption, with the school forced to close down on one of the most important weeks in the academic calendar. Not only has the fire damaged the school’s building; the repercussions will be felt at a time where young students are most sensitive, particularly as adjusting to a new school routine can be a pretty daunting prospect. Whilst most students settle into school-life, young pupils at Roding Primary School have to face fire’s disruptive effects on their education. So how does fire impact on a child’s education? According to recent statistics, there are up to 700 school fires a year in the UK; 184 fires in London schools in 2017 alone; and 47 fires in London schools this year. These figures highlight fire’s ability to cause a substantial amount of stress and disruption to children and families, with school closures and refits reducing the amount of time in the classroom. Cost of school damage Last month, London fire commissioner Dany Cotton stressed that every year millions of pounds of government money is wasted on repairing schools destroyed by fire. Furthermore, statistics from the Fire Protection Association indicate the average repair cost rose from £330,000 per fire in 2009 to £2.8 million in 2014. Fire’s effect on education Fire can have negative effects on children’s productivity levels, especially if a costly refurbishment is necessary after a large fire. Not only does a considerable refit pose huge financial cost to the affected school, it can also disturb children’s education, with low grades jeopardising a child’s career and potential. The children at the Roding School will be provided with assignments to do at home but they will miss lessons. When they do return, temporary classrooms are by no means ideal teaching conditions and do not encourage students to feel comfortable and secure in their learning spaces. And the bigger the fire, the more costly the refit, meaning students will be forced to spend more time in these uninspiring and possibly inapt temporary classrooms. Combined with the added noise levels from construction equipment, this hardly makes for a productive learning environment for young students. The government acknowledges that missing lessons has an impact on attainment at key stages. They track attendance and have commissioned reports to confirm it. The pursuit of parents who take children out of education for holidays is backed by government spokespeople affirming the detrimental impact on educational attainment of missing a single day of education. The impact of these fires and the disruption that they cause can reduce the results of the students, and the government’s own statistics therefore affirm this. Surely, if government understands the importance of missing a days’ worth of education, and is willing to pursue and fine parents to ensure attendance, then more effective solutions must be implemented to quell the spread of fire? What is the solution? Government do understand the solution. Their own guidance, Building Bulletin 100 (BB100) highlights the importance of minimising the effects of fire on teaching, limiting the effects of interruption to operation of the school and seeking to have the school operational within 24 hours. It supports the use of property protection and an expectation of the use of sprinklers. Roding Primary School is split between two sites: one on Cannington Road and one on Hewett Road, the campus destroyed by the fire. Cannington Road is the newer build out of the two and the one featuring sprinklers, presenting the question: would the Hewett Road site still be standing if sprinklers were installed? Even though the government understands the impact on education, it is currently reviewing Building Bulletin 100 (BB100). It has suggested that the ‘sprinkler expectation’ will be removed. The number of new schools being erected with sprinklers installed has fallen to just 30% from a high of 70%. The BSA wants the government to explicitly maintain and reaffirm the ‘sprinkler expectation’ in the revised BB100 so that fewer schools are damaged and destroyed by fire. This is backed by Dany Cotton and the Fire Protection Association which has called for sprinkler installation in schools. The government has the opportunity to do this when it reviews the fire safety technical guidance of the building regulations later this year. It is evident that when sprinklers do operate they extinguish or contain the fire on 99% of occasions across a wide range of building types, so why are they not considered a necessity in building design?[1] Undoubtedly, fire is a huge educational and monetary cost to schools, with the fire at Roding Primary School exemplifying the short and long term effects fire can have on a school’s function. From disruption to education, to its impact on finances, fire in schools must be avoided. Although sprinkler systems are a celebrated solution to resolve this crisis, their effectiveness has not led to successful implementation across the UK’s schools. How many more fires need to occur and children’s educations disrupted before sprinkler installation becomes a prerequisite of school design and safety? Visit: www.business-sprinkler-alliance.org [1] Efficiency and Effectiveness of Sprinkler Systems in the United Kingdom: An Analysis from Fire Service Data – Optimal Electronics May 2017

Time is of the essence in business, particularly the roofing business. Delays, however minimal, incurred during commercial new-build or refurbishment projects can lead to disproportionate costs to the client writes Mahroof Hussain, Area Technical Manager at Sika-Trocal . When someone falls behind schedule in a multi-trade works programme, the knock-on effect can be disastrous. If a roof’s waterproofing is held-up, for instance, interior works are also likely to be delayed with the building not-yet weatherproof. This means the installation of floors, walls, electrics, plumbing and the like are also invariably put on hold. The accumulative effect of this type of stalling could set a project back weeks and months, rather than hours or days.  Rapid development Product innovation and the streamlining of the building process itself is vital to helping contractors, developers  etc, fulfilling the country’s need for more housing, for example.  Sika-Trocal’s Type S 1.5mm waterproof roof membrane presents a fine example of a system created specifically for the 21st century roofing market. Suitable for new and refurbishment projects, the Type S system uses specially formulated Sika-Trocal laminated discs to fasten the membrane and the insulation to the substrate. The mechanical-fixing process has been proven to speed-up the roof waterproofing process by up to 30%. The improved rapidity is aided by the solvent-welding method devised to fuse the overlapping membrane rolls; a practice pioneered by Sika in the UK. Employing this method process, rather than the more traditional heat-welding practice, also results in a neater, more attractive waterproof finish. Heat welding requires a temperature of more than 350°C in order to successfully fuse membrane layers. Although there is no naked flame involved, in inexperienced hands a membrane is at risk of burning using this method. Mechanically-fixed, solvent-welded membranes also require less equipment to install. This benefit, along with its time-saving attributes which help reduce on-site working hours, means the Type S system helps cut pollution caused by machine-based emissions. Wind resistant  The Type S system comprises a vapour control layer and insulation, which is held in place by the Sika-Trocal discs. These are spot-welded to the membrane. The fixings mean the whole system is mechanically-fastened to a roof’s structural deck. The added strength this provides makes the Type S membrane an ideal waterproof solution for roofs located in exposed areas where high wind uplift is a common hazard. Speed of installation and reliable, long-term performance are the properties which attract contractors and renowned commercial brands to specify Sika-Trocal’s Type S. Supermarket stores nationwide such as Sainsbury’s, Tesco and Asda have recently been fitted with the system. Its rapid delivery minimises disruption to businesses, hence its specification in September for a new Morrisons store where its installation across a 600m2 roof area was completed in an incredible three days. The system’s speedy installation doesn’t compromise its quality, however. It is why Sika-Trocal’s Type S system is the rapid, long-term solution when it comes to waterproof roofing. Visit: http://gbr.sika-trocal.sika.com

It makes a difference when it comes to relationships, but having the right chemistry is also a key ingredient in the creation of polyurethane coatings, adhesives, and sealants. Like any good relationship, it’s something you must work hard at in order to achieve the best result. This is why custom chemistry is often seen as one of the best ways to create tailored products that will continually take performance to new levels. So, what is the secret to custom chemistry, and how can it make a difference in a market saturated with so much choice? The secret to any great relationship starts through conversation. As a leading global manufacturer of specialist resin and polymer technologies, Incorez has a team of chemists who listen to their customers, so they can solve their problems. It could be a new resin, or a matter of tweaking an existing formulation. It might be helping a customer achieve the finish they have been wanting, or pass a regulation they have failed for years. Regardless of the requirement, custom chemistry will help improve a customer’s product in the long term. Let’s look at osmotic blistering, a common problem in the coatings industry. Traditional polyurethane coating applications have a slow and haphazard curing process, which allows moisture or humidity to cause unwanted reactions, generating CO2 bubbles. These create pinholes or blisters, which weaken the film integrity, and spoil the finished appearance. The fact that these bubbles occur during the curing process would be seen by many as unavoidable, but oxazolidines speed up curing, and prevent the generation of CO2. In other words, oxazolidine technology will eliminate bubbling during application, helping to preserve aesthetics, and minimise pinhole defects. This ensures a better finish, and improved film integrity. Moisture-triggered chemistry enables curing in all temperatures and humidity conditions, with the same end result – a tougher, more durable film. Chemically related to oxazolidines, Incorez also offers an aldimine latent hardener, Incozol BH, which hydrolyses on exposure to moisture, to give you a reactive amine crosslinker ideally suited for use in high-build polyurethane systems, such as sealants and adhesives. This unique latent curing agent not only speeds up the cure of low NCO-containing prepolymers, but also allows for faster through-cure with no bubbles from the formation of carbon dioxide, giving you a perfectly cured product no matter what the environment. The huge rise in resin flooring has seen customers demand greater levels of performance for specific applications, but much depends on the nature of the amine curing agent. There are many perceived weaknesses of water-based curing agents, one being that they cannot achieve the same performance as solvent-based technology. Incorez has taken performance to a new level, developing a hardener that has good universal compatibility with all epoxy resin types, and addresses fundamental challenges with water-based technology, such as low-temperature cure, blushing, and water resistance. This coupled with physical characteristics such as excellent abrasion and impact resistance, together with high chemical, water and solvent resistance, make Incorez curing agents the perfect choice for user-friendly industrial and decorative concrete floor paints. But, when it comes to customised solutions, there are few technologies that can match waterbased polyurethane dispersions for versatility and performance.  The launch of the Dispurez product range in 2015 was the start of a new era for these waterbased products, delivering high performance with environmentally and user-friendly chemistry.  With the recent addition of a new tough, chemically and hydrolytically stable product, Dispurez 103, the product range offers a great starting point for the development of next generation, high performance products.  However, if these don’t quite suit your needs then our skilled and experienced research team in Preston can go one step further and tailor these to deliver exactly what you want. The search for products that help improve the performance of formulated systems is constantly evolving whatever industry you are in. By working closely with our customers, continually innovating and breaking new ground Incorez can make a real difference where it counts. Visit https://incorez.com/